Revert "Add Apache 2 license"

Reverts basho/riakcs-java-client#3

The crusty old json.org code included in this repo is **not** apache2 licensed. 

It is a "choose your own adventure" (made up) license that states " "The software shall be used for good, not evil" 

Unless we strip out this library this can not be licensed as Apache2.

Beyond that, it is unclear why this repo even exists as the AWS libraries or any Java S3 library is better supported and should work.